Vulnerability CVE-2020-15216

Vulnerability Name:

CVE-2020-15216 (CCN-189497)

Assigned:

2020-09-29

Published:

2020-09-29

Updated:

2021-05-05

Summary:

In goxmldsig (XML Digital Signatures implemented in pure Go) before version 1.1.0, with a carefully crafted XML file, an attacker can completely bypass signature validation and pass off an altered file as a signed one. A patch is available, all users of goxmldsig should upgrade to at least revision f6188febf0c29d7ffe26a0436212b19cb9615e64 or version 1.1.0

CVSS v3 Severity:

6.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N)
5.7 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): Low Privileges Required (PR): None User Interaction (UI): Required
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): None Integrity (I): High Availibility (A): None

5.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N)
4.6 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): High Privileges Required (PR): None User Interaction (UI): Required
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): None Integrity (I): High Availibility (A): None

CVSS v2 Severity:

4.3 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Medium Authentication (Au): None
Impact Metrics:	Confidentiality (C): None Integrity (I): Partial Availibility (A): None

4.9 Medium (CCN CVSS v2 Vector: AV:N/AC:H/Au:S/C:N/I:C/A:N)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): High Athentication (Au): Single_Instance
Impact Metrics:	Confidentiality (C): None Integrity (I): Complete Availibility (A): None

Vulnerability Type:

CWE-347

Vulnerability Consequences:

Bypass Security

References:

Source: MITRE
Type: CNA
CVE-2020-15216

Source: XF
Type: UNKNOWN
goxmldsig-cve202015216-sec-bypass(189497)

Source: MISC
Type: Patch, Third Party Advisory
https://github.com/russellhaering/goxmldsig/commit/f6188febf0c29d7ffe26a0436212b19cb9615e64

Source: CCN
Type: goxmldsig GIT Repository
Signature Validation Bypass

Source: CONFIRM
Type: Third Party Advisory
https://github.com/russellhaering/goxmldsig/security/advisories/GHSA-q547-gmf8-8jr7

Source: FEDORA
Type: Third Party Advisory
FEDORA-2021-9316ee2948

Source: FEDORA
Type: Third Party Advisory
FEDORA-2021-a2a7673da2

Source: MISC
Type: Third Party Advisory
https://pkg.go.dev/github.com/russellhaering/goxmldsig?tab=overview

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2020-15216

Vulnerable Configuration:

Configuration 1:

cpe:/a:goxmldsig_project:goxmldsig:*:*:*:*:*:*:*:* (Version < 1.1.0)

Configuration 2:

cpe:/o:fedoraproject:fedora:32:*:*:*:*:*:*:*

OR cpe:/o:fedoraproject:fedora:33:*:*:*:*:*:*:*

Denotes that component is vulnerable

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